Permutation lock



Apnl 22, 1930. K. LITZELBERGER 1,755,995

PERMUTATION LOCK Filed Feb. 8, 1928 6 Sheets-Sheet l .n mwN lll IIIH IHHIIIIIII Illll lI II Illi lllllli lllll umm Nn m6 @N --gil--jiiQ--iiiilmnn K. LITZELBERGER April 2.2, 1930.

PERMUTAT ION LOCK Filed Feb. 8, 1928 6 Sheets-Sheet April 22, 1930. K.- LrrzELBERGr-:R

PERMUTAT I ON LOCK Filed Feb. 8', 1928 6 Sheets-Sheet IN VEN TOR. I17 arl Lij ebeyel; B Y

TTORN Y.

April 22, 1930. K. UTZELBERGER PERMUTATI'oN-Locl Filed Feb. 8, 1928 6 Sheets-Sheet 4 L 1 I 1 IIVHIIIIIFHIIIIIMLM y w -LJ E .LILL V 1.1-11 1-25-1., ---A11 l l -il i An A TTORNEY.

April 22, 1 930. K. I ITzl-:LBERGER PERMUTATION LOCK 6 Sheets-Sheet Filed Feb. 8, 1928 I N V EN TOR. Karl Lz'] alberga@ A TTORNE Y.

April- 22, 1930. K. LITZELBRGER 1,755,996

l PERMTATIONLOCK Filed Feb. 8, 1928 6 Sheets-Sheet 6 illllll lI-lllll Patented pr. 22, 1930 IT ED' STATES PATENT QFFI'CE' KARL' LITZELBERGER, OF HOLLIS, NEW YORK PERMUTATION LOCK' Application filed-February. S, 1928.

f: hereinafter set forth, a permutation lock of theapush-piii type so constructedy and arranged whereby. the surreptitious operation thereof.` to'release the bolt structure, with Whicliit isassociated, is reduced to a miniin um.

A further object of the invention is to provide, manner as hereinafter set forth, a permutation lock of the pushpin type including a; locking bolt structure shifting linsane, a kpermutable locking mechanism for said means, and a lockingA device for said mechanism, and with said mechanism and device including means for controlling alarm circuits to indicateqwhen the lock is being opened by an authorized person and When any attempt is made to open the lock surreptitiously.

Afurther object of the invention is to provide, in a manner-.as hereinafter set forth, a

permutation lockl of the push-pin type including concealed means for releasing the locking bolt structure shifting means when the permutable locking mechanism becomes damaged or impaired.

Further objectsof the invention are to provide, in a manner as hereinafter set forth, a permutation lock of the push-pin type which is comparatively simple in its construction and arrangement, strong, durable, compact, thoroughly efficient in its use, conveniently operated to released position, readily installed, "and comparatively inexpensive to manufacture.

With the foregoing ,and other objects in view theinventioii consists of the novel construction, combination and arrangement of VpartsA asl hereinafter more specifically de- Serial No. 252,849.

characters denote corresponding parts throughout the several views:

Figure 1 is a side elevation of a permutation lock in accordance with this invention.

Figure 2 is a longitudinal sectional view thereof.

Figure 3 is a longitudinal sectional View of the perniutable mechanism in locking position.

Figure 1 is a side elevation of the permutable locking mechanism in released position.

Figure 5 is a section on line 5-5 Figure 1. Figure 6 is a section on line 6 6 Figure 1 and further illustrating in dotted lines a pair of locking bolt structures in locked position.

Figure "I is a front elevation of the lock.

igure S is a rear elevation thereof.

Figure 9 is a section on line 9 9 Figure 1.

Figure l0 is a section on line 10-10 Figure 1.

Figure 11 is a detail in longitudinal section of the locking device for the permutable locking mechanism.

Figure 12 is a section on line 12-12 Figure 1.

Figure 13 is a section on line 13-13 Figure 11.

Figure 14 is a fragmentary view in elevation of the permutable locking, mechanism.

Figure 1o is a section' on line 15-15 Figure 3.

Figure 16y is a section on line 16-*16 Figure 3.

Figure 17 is a section on line 17-17 Figure 3.

Figure 18 is a section on line 18-18 Figure 8.

.Figure 19 yis a section on line 19-19 Figure 3.

A permutationA lock, in accordance With this invention, comprises a front plate referred to generally at 1 and formed ofan outer and an inner portion 2, 3 respectively and with .the former of greater diametei` than the` latter. The edge of the portion 2 is beveledas at et. The plate 1 is formed With an axial opening 5, an opening 6 arrangedbelow, in alignment With and of smaller diaineter than the opening, vand a pair of spaced openings, T arranged above the opening 5 and with each opening 7 positioned at one side of the opening 5. The plate 1 has projectingV from'its front face a collar 8 having itsinner face forming a continuation of the opening 6. See Figure 2'. rllhe outer diameter of the collar 8 gradually decreases from its inner toward its o-uter end. lVith reference to Figure 7 the outer face of the plate 1k above each opening 7 is formed with a scale or a series of graduations arranged in arcuate form as indicated at 9. Forwardly of the front of the plate 1, at the vertical median thereof and projecting outwardly therefrom is a supportlOfor a depending pointer 11 for a.v purpose to be presently re'- ferred to. s 's Arranged rearwardly of the plate 1, as well asbeing fiXedly secured thereto and arranged inspaced relation therewith is a casting referred to generally at 12. Holdfast devices 13 and spacing`collars'14 are provided Vfor fixedly securing thek casting 12 to the plate 1 and further for maintaining said. casting f spaced rearwardly from the plate 1. With reference to Figure 2 the casting 12 includes a cylindrical body'portion 13 provided at its forward end with a flange 14 and at its rear end with a flange 15. The flanges 14 and 15 are of annular contour. The upper portion of the flange 14 is thickened as at 16 and the Y upper portion of the flange 15 thickened as at 17. `The lower part of the flange V14is provided with an opening 18 and a rear-y wardly extendingV collar 19 which registers with the opening 18. The lower part of the ilange'l isthiclrened as at 20' and provided with an Vopening 21 opposing the openingl8 and collar 19 but of a diameter less than the diameter'of said opening 18 and collar 19. The openings 18 and 21 are positioned in alignment with respect to the longitudinal median of the body.porticn 13. The thiclrened parts 16, 17 of the flanges 14, 15 are formed with openings 22, 23 'respectively which are arranged in alignment and further disposed in alignment with respect to the longitudinal median of the body portion 13.

With' reference to Figure 5 the flange 14 is formed with a pair of openings 24 which are arranged in alignment with the openings 7 formed in the front'plate 1. With reference to Figure 6 the flange 15 is provided'with a pair of op'eningsn25 lwhich are arranged in Y alignment with theV openings 24. Formed integial with the lower portion of the flange 15 and extending rearwardly therefrom'is an'arm 26 which terminates in an upstanding circular member 27 'constituting com- 'binedl support and bearing provided at its lower portion `with a pair of spacedl openings 28.

forward face of the member 27 is a pair of prot-uberances 29, eacl registering with an opening 28. The protuberances 29 are also integral with the arm 26. See Figures 1 and 2. integral with the member 27 and extending rearwardly therefrom is a pair of collars 30, each registering with an opening 28. The protuberances 29 andcollars 30 in connectionwith the member 27 `Vprovide bearings for a purpose to be presently referred to. Integral with the upper portion of the member 27 and projecting forwardly therefrom is a pair of spaced sleeves 31, constituting bearings and each of which registers with an opening 32 formed inthe member 27 The member 27 centrally thereof is provided with an opening 33 of greater diameter than the openings 28 and 32. l/Vith reference yto Figure 2 the body portion 13 is open at its forward end and has securedv against its inner face' atits rear end `circular :plate 34 of appropriate thickness and which is formed with a centrally arranged opening 35 disposed in alignment with respect to the opening 33. rilhe plate 34, see Figures y2 and 3 is provided with a pair of diametrically opposed openings 36, 37, one arranged' atthe top and the Vother at the bottomof the plate. The forward face of the plate 34 is recessed at 38 to provide a pocket and said openings 36 and 37 communicate with said recess.

The locking device for the permutable locling mechanism includes Va pair of releasable locking elements Vof like construction, and the description of one will apply to the other. rlhe locking elements areH arranged to be shifted in opposite directions relatively to each other when it is desired to release the permutable locking mechanism. The locking elementsv further constitute supports or pivots for. certain. elements ofthe locking bolt structure shifting means.v The locking elements are also of the permutable type and are best shown in Figures 1, 2, 5, 11 and 13. Each locking element includes alengthwise shiftable roch shaft 39 provided at its outer end with a sleeve 40 carrying a handle 41. See Figure 11. The shaft 39is formed with a lrey-way 42, carrying a key 43 for slidably connecting therewith a peripherally grooved collar 44, provided with an extended hub 45 mounted on the shaft 39'. See Figure 11. The sleeve 40 extends through an opening 7 and projects from the front plateV 1 and is ar-V end of Vbody -portion13. The sleeve 42 is.

mounted ina sleeve 31fand extends into the member 27. See vFigure 2. rlhe collar 44 Y Y 1 abuts against the forwardend of the sleeve Formed integral with thellower part of the' b b l 31. See Figure 2. .Y The shaft39 intermediate its ends is formed with a laterallyl extending stud 46 which coacts, in a manner to be presofthe collar is indicated at 58.

ently. referred to, with a flanged sleeve 47 provided with-a bayonet-shaped 'slot 48. The

.sleeve 47 is looselymounted onthe shaft 39 and its flangefisindicated at 49. Extended from the flange y49 is a locking lug 50 for a See Figure 11, and which is aligned with an opening 25. Mounted on the shaft 39 is a flanged sleeve 53 which extends through the aligning openings and 52 and said sleeve 53 has its flange 54 at the forward end thereof and said flange 54 is interposed between the flange 49 and an extension 51. The flange 54 is provided with a notch 55through which is adapted to extend the lug to lock the sleeve .53 from revolving aboutthe shaft 39. The

lug 50 is also adapted to extend into a socket 56 formed in the extension 51 and aligning with the notch or groove in `the flange 54. FiXedly secured to the shaft 39 forwardly of the lug 46 is a flanged collar 57. The flange Loosely mounted on the shaft 39 is a collar 59 and interposed therebetween and the collar 57 is a coiled controlling spring 60 for said shaft 39. rihe sleeve 53 is formed with a peripheral key 61 for a purpose to be presently7 referred to.

See Figure 11. Mounted in aligning collars 29, 30 and extending through an opening 28 l f is a rock shaft 62. See Figures 1 and 2. The

shaft 62 projects forwardly from the collar '.11 29 and rearwardly of the collar 30. The forward end of the shaft 62 carries a crank arm 63 provided at its upper end'with a cam 64. The crank arm 63 at its upper end extends into the groQved collar 44 and the cam 64 rides against the periphery of said collar whereby when the shaft 39. is rocked in one direction the crank arm 63 will be shifted outwardly, under such conditions rocking the shaft 62 ina direction to move a latching member 65 from latching position with respect to the permutable, locking mechanism.

lThe latching arms are oppositely disposed with respect to each other, see Figure 8, and engage in a peripherally grooved projection i 66 formed at the rear of the permutable locking mechanism. See Figures l and 8. The latching arms 65 prevent the longitudinal shifting of the permutable locking mechanism sothat the latter cannot be actuated to released position with respect to the locking 1locking mechanism further acts as an additional locking means for the locking bolt structure shifting means as the lugs 50 normally prevent the shifting of the sleeves 53 to which certain elements of the locking bolt C; structureshifting means are keyedand this function will berhereinaften morelzfully referred to.

The lugs46 coactawith-the collars 47 for the purpose ofmaintaining the shafts v39 rex'- tended against the action of the controlling springs 60. The shafts 39 arey automatically shifted inwardly, by the springs 60, when the lugs 46 are positioned to enter the slots 48 of the collars 47. The collars 47 are adjustable on the shafts 39 so that the turning movement of the shafts 39 will be to a greater or less extent depending upon the position of the slots 48 relative to the shafts 39. Vhen the lock is closed the handle members 41` are in a vertical position and the lugs 46 ride against the free edge of the collars 47 and which prevents the inward shifting of the shafts 39. It will necessitate the shafts 39 to be turned to position the lugs 46 to oppose the slots 48 to enable the springs 60 to shift the shafts 39 inwardly whereby the lugs 46 will pass into the slots 48. After the lugs 46 have passed into the slots 48-,the shafts 39 are again turned in the same direction so that the lugs 46 will abut against one side wall of the slots 48 and the shaftsv 39 will be arrested from further turning with respect to the collars 47. After the lugs have been positioned in the manner as stated the shafts 39 are pulled outwardly and on the outward movement thereof the collars 47 are carried therewith whereby the lugs 50 will be moved clear of the flanges 54 of the sleeves 53, under such conditions releasing certain of the elements of thebolt structure shifting means to permit of such means being operated in the manner as hereinafter referred to. Tie scales or graduations 9 assist the operator to properly position the shafts 39 to arrange the lugs 46 opposite the slots 48, as the lugs are set with respect to thevscales. The operator will know to what extent the handles 41 are to be shifted with respect to the scales or graduations 9 to properly position the shafts 39 to enable the subsequent releasing of the lugs 50 from the flanges 54 of the sleeves 53.

The permutable locking mechanism for the locking bolt structure shifting means is best shown in Figures 2, 3 and 4, and is normally held frein-actuation to prevent the shifting therefrom from locking position with respect to said means by the locking device heretofore referred to. After the perinutable locking mechanism has been released from the locking device, it can be adjusted to release the locking bolt structure shifting means whereby the latter can be rocked for the purpose of shifting the bolt structure from active or locking position with respect to the door of the safe or vault.

The permutable locking mechanism inclusesr a rotatable and longitudinally shiftable shaft67 having its inner endiformed with the.y grooved projection 66'. The groove 69 is an annulus or collar 1 having its outer edge providedV with a dial 72.V The outer edge of the annulus 7 1- is beveled.y See Figures 3 and4. Loosely mounted on the shaft 6,7, is a sleeve 7 3lhaving-its outer end formed with an annular flange 74 which kabuts the 4 annulus 71. The inner end of the sleeve 73 l' the flange 77. The flange l74 is concealedV face, as atk 78 for the reception of the flange 74. A partof the outeredge of the flange 77 is beveled as at 79 and provided with a dial 80. The outer edge of the annulus 71 is flush with'the beveled edge portion 79 of by the annulus 71 and th'efiangeY 77. The pointer 11 is associated with'the dials 72 and 80. A disc is indicated at 81 and which is interposed between the flange 77 and the front plate 1 and said disc 81 has a centrally arranged opening 82 through which extends the sleeve 73. Integral with the disc 81 and extending rearwardly therefrom is a sleeve 83 which surrounds the sleeve 76. The disc 81 and sleeve 83 have a snug fit with sleeve 76 so as to be carried ytherewith when sleeve 76 is revolved, but disc 81 and sleeve 83 can be revolved relative to sleeve 76 and which will be hereinafter referred to. The element 10 extends forwardly'from disc 81. A handle 84 is on element 10 to retain disc-81 and pointer 11 stationary when adjusting sleeve 76.- Sleeve 83 extends through opening 5 and has mounted on its rear end a ring 85 provided with spaced protuberances 86 for a purpose to be hereinafter referred to.

The ring 85 is bodily carried with the disc 81 when the latter-is revolved about the sleeve 7 6. The sleeve 73 .is of greater length than the sleeve 76 and projects from the rear end of the latter. That end of the sleeve 73 which projects from the inner end of the sleeve 76 is provided with the threads 7 5. Vrlhreadledly engaging withv the threads 75 is an interiorly threaded collar 87 ,'which in connection with the flange 74 couples the sleeve 76 to sleeves 73. The collar is provided with sockets 86 to receive a suitable instrument for securing it in'position. Arranged within the forward end of theY body portion 13, seevFigure 2, is a flanged bearing 87, in the form of an annulus,

i K and through which extends the sleeve 76. The

bearing 87 is stationary and has its flange 88 abut against the forward end of the body por.-

f tion 13.'v AThe sleeve 83 is arranged forward` n ly ofthe bearing 87'. `Seel Figure 3.

- The sleeve 76 has its rear end peripherally threaded as atk 88 and threadedly Yengaging lwith said threads 88 is a collar 89 which projects rearwardly from sleeves 73 and 7 6. The collar 89 is locked to the sleeve 76 by a retaining screw 90. The rear edge of the collar 89 is provided withk a cylindrical protuberance V91 see Figures 3 and 4. The protuberance 91V The plunger device, best showninFigures l 3, 4, 15 and 16 comprises a collar' 92 formed with a pair of spaced, opposed annular flanges 93, 94. The flange 93 is of less thickness than the flange 94 and is provided with an opening 95 for the reception of the protuberance 91. See Figure 3. The flange 93 is arranged forwardly with respect-to the flange 94 and the.

latteris provided with a pair of oppositely disposed, spaced arcuate slots 96,V 97. See

Figure 16.y Extending rearwardly from the collar 92 is a hub 98, upon which is mounted a circular apertured disc 99 which abuts againstthe collar 92 and is retainedv in abutting position by a securing collar 100 positioned on the hub 98. The collar 92 is adjustable relatively to the disc 99, through the medium of the slots 96, 97 and the holdfast devices 101, 102. See Figures 3, 16. Each of said holdfast devices consists of a short bolt countersunlr in and extending through the disc 99 and also extending through. a slot 96 or 97 and carrying onits threadedv end a nut which is positioned between the flanges 93, 94. See Figure 3. The collar 92 is mounted on the shaft 67. Fixedly secured to the disc 99 and projecting rearwardly therefrom is a pair of plunger members 1,03, 104. The disc v99 at its rear end is provided with a bayonet-shaped slot 105. See dotted line showing in Figure 4. Coactingwith the slot is a stud 106 carried by the shaft 67 and the latterV is employed for coupling the plunger device to the shaft 67 whereby said device will be bodily carried with the shaft 67 when the latter is rotated or turned.

Mounted on the shaft 67, rearwardly of theplunger'device, and VVoperated from the latter is a locking. devicetfor the bolt structure shifting means. Said locking device is capabley of bodily rot-ating with the shaft 67, and is further arranged relative to the shaft 67 whereby the latter can be shifted lengthwise independently of said locking device, and the latter comprises a barrel 107 Vformed of two differentinner' diameters. The portion of greatest inner diameter is indicated at 108 and the portion of smallest inner diameter is indicated at 109, andthe latter is seated upon the shaft 67. The portion of greatest inner diameter isfspaced'from theshaft 67 The forward end of the barrel 107 is of yreduced outer :diameter-as indicated at 110.

rrl`he forming ofthe barrel of two inner dialneters vprovides a shoulder 111. SeeFigure 3. The .reduced A:forward portion 110, of the barrel 107is provided with a slot or notch 112 for the reception of the stud `106 whereby the loclringfdevice can becoupled with the shaft 67 so as to bodily rotate therewith. Extending into and threadedly engaging with theA rear end of the barrel 107 is a peripherally threaded, fianged collar 112 which seats on the shaft 67. The flange of the collar 112is indicated at 113 and is countersunlr in a setting head 114 which is mounted upon the rear end of the barrel 107. rhe flange 113 is secured to the setting head 114 by-vafplurality of holdfast devices 115. See yFigure 3. .The outer edge of the setting head 114has a portionthereof beveled and which is'provided with a dial 116. See Figure 8. lThe-setting head 114 is arranged forwardly with respect tothe. groove 68 formed in the extension 466. The latching arms 65 are ar- Y ranged rearwardly of the setting head 114 -and the latter is positioned against the rear face of the member 2'7. See Figures 3 and 4. Secured to the shaft 67 Y and arranged within -the barrel 107 is a collar 117 arranged against the inner end of the collar 112. Positioned against the collar 117 and mounted on the shaft 67 is a washer 118. Arranged within the barrel 107 and interposed between the washer 118 and shoulder 111 is a coiled controlling spring 119 for the shaft 67 and Apurpose to be presently referred to.

which normally Vtends tomaintain said shaft 67 `in the position as shown in Figure 3. Slidably mounted on the barrel 107 is an apertured throw-out disc 120 carrying a plu-l rality of forwardly extending abutment fin- .,gers 121 which are engaged by the plunger members 103,104 forthe purpose of shifting the discr120 rearwardly on the barrel 107 to the position as shown in Figure 4 for a The abutment fingers 121 extend into the openings 36, 37. See lFigure 3. The said fingers also extend int the recess or pocket 38 and are arranged rearwardly ofa controlling disc'122 rprovided with'openings 123 for thepassage of the plunger members 103, 104, The disc 122 is formed with a series of openings 123, see

"Figure 5. The disc 122 is adjustable so that selective openings therein can be positioned to cooperate with the plunger members 103, 104, for the passage of said members to en* vgage the abutment fingers 121 for the purlubly adj usted on barrel'107, is arranged forwardly of flange 124 and is retained on the reduced forward end 110 ofb'arrel-107by a retaining collar 127. The plate 34, having the openings 36, 37 and recess 38 is stationary and through the openings of said plate 34 extends the barrel 107. The throw outdisc 120 is provided with two sets of locking members 128, each set positioned at the lower portion of a side of the disc at the edge thereof. The locking members 128 project l:forwardlv from and are vadapted to extend into the bolt structure shifting means for the purpose of locking said means, The locking members 128 are arranged exteriorly of the barrel 107-at each side thereof.

interposed between theplunger device and the locking device and surrounding the shaft 67 is a coiled spring 129 for normally'maintaining the plunger device a substantial distance forwardly of the locking device. The strength of the spring 129 is materially less than the spring 119 which acts as a means for normally returning the shaft 67 to its normal position as shown in Figure 3.

The throw-out disc 120 is also spring controlled and for such purpose a controlling spring 130 is employed which is mounted on the barrel 107 and interposed between a pair of collars 131 and 132. rlhe collar 131 abuts against a boss 133 formed on the forward face of the member 27. See Figure 3. The collar 132 normallj7 abuts against the disc 120 and it is formed with a peripheral gr0ove134 for a purpose to be presently referred to. The collar 132 is secured to the disc 120 and it is capable of being shifted rearwardly, in a manner as hereinafter referred to by the concealed means for the purpose of releasing the bolt structure shiftingmeans when the permutable locking mechanism becomes damaged or is impaired.

The locking bolt structure shifting means comprises a rock shaft 135, a tubular shaft 136 mounted on the shaft 135, a-handle member 137 secured to the outer end of the shaft 136 and a handle member 138 at the outer end of the shaft 135. The shaft 136 is of less length than the length ofthe shaft 135 and revolves on the latter. The shaft 136 extends through the opening 6Aand abuts against the outer end of the collar 8. See Figure 2. The shaft 135 extends through the shaft 136, projects from the rear end thereof and also extends through the opening 21. See Figure 2. The outer end of the shaft 135 has a head 139 which inconnection withra cap nut 140 secured to the rear end of the shaft 135'couples the latter'to the plate 1 and also to the casting 12. The shaft 136 in proximity to its rear end is provided lwith a flange V141 which abuts against an eccentric 142 secured to the rear end of said shaft 136. Fixed to the shaft 135 and opposing the eccentric 142 isA an eccentric 143. Secured to the shaft l136 '8. See Figure 2. Y the eccentric 142 1s a crank arm 146 and ef;-

is a collar 144 which in connection with the head 145 formed 4on the outer end of the shaft 136 prevents lengthwise shifting of the latter. The head 145 abuts against the collar Extending laterally from tending from the eccentric 143 is a crank Varm 147. rEhe crank arms are oppositely dising arcuate link 149 which is keyed at itsupperend by a key 61 to a sleeve 53 on a shaft '39. See Figure 11. Pivotally connected at its lower end, to the `outer. end of the crank karm 147, as aty 150 is an upstanding arcuate link 151 which is keyed at its upper end to the other sleeve 53 carried by the other shaft 39. The links 149 and 151 are oppositely disposed with respect'to each other and each is provided with anv opening 152 for connectionwith a locking bolt'structure convention'allyshown in dotted lines in Figure 6. The link 149 is formed with a set of openings 153 andthe link 151 witha set of openings 154.l The said sets of openings are adapted to receive the sets of locking members 128 VSee Figure 1.

Vened part 17 of the flange 15 and carried by the throw-out disc 120 and when said locking members 128 are seated in the sets of openings 154 the links 149V and 151 are locked from movement. The arrangement of the eccentrics, 1n connection with the crank arms provides for the shifting of the Y links 149, 151 in opposite directions with respect to each other for the purpose of moving the locking bolt structure to and from locking position with Yrespect to the door of y a safe or a vault'.

The liange 15 is apertured as at 155 and formed withtubular extensions 156 forming continuations of the openings 155 and which provide guides for certain of the locking members. The thickened part 17 of the flange 15 is formed with openings 157 to provide guides for other of the locking members. The means which provide the guides for the locking members are arranged on opposite sides of the liange 15. rlfhe links 149, 151 are positioned between the thickthe entensions 51. See Figure 1.

The links are simultaneously operated and the action is had when the operator grips the handles 137 138 and shifts them in opposite directions relatively to each other. .The

shafts 135, 136 cannot'be rotatedY until the locking members 128 are shifted clear of the links 149, 151.

For the purpose of releasing the locking members 128, from the links 149, 151, in case that the permutable locking mechanism becomes damaged or isl impaired, a shifting mechanism is provided for moving the throwout disc 120, rearwardly on the barrel 107, in dependently of the plunger members 103 and 104. Said means comprises a longitudinally disposed bar 155which is slidably mounted vin the portions 16, 17 of the flanges 14, 15 respectively, The forward end of the bar 155 will normally seatin asocket formed in the rear face of the reduced portion 3 of the front plate 1. The socket is indicated at 156. To `have access to the rod'155 for the purpose of shifting it, it will necessitate boring through the front plate 1 under such conditions such shifting mechanism is concealed. The rear end of the rod 155 has connected therewith a depending fork 157 which engages in the grooved collar 132. The bar 155 bodily shifts with the throw-out disc 120 when the latter is moved rearwardly on thebarrel 107 and the plunger device engages with the abutment fingers 121 for the purpose of shifting the locking members rearwardly. Now if the plunger device becomes impaired in any manner, the bar 155 can kbe shifted rearwardly, after one has access tothe front end of the bar 155 by boring through the plate 1. The bar 155 is shifted rearwardly which carries thev fork therewith, and the latter seating in the collar 132 will move it rearwardly and as the collar 132 is connected to the throw-out disc 120,'thelatter will also be carried rearwardly and the locking members willv be shifted clear of the links 149, 151 under such conditions the shifting means for the locking bolt structure can be operated.

The lock includes three controlling means for alarm circuits. One of the controlling means is for the purpose of sounding an alarm when onestarts to open the lock, irrespective if the person opening the lock is authorized or not. Another of the controlling devices `provides means for` sounding an alarm when an attempt is made to open the lock surreptitiously and another of the controlling devices is to indicate that the party who is opening the lock is authorized to do so. The casting 12 includes an extension 158 provided with binding posts 159 which lead to circuit connections. The extension 158 carries a series of contacts 160, 161 and 162. Associated with the contact 160 is a controlling element 163. Associated with the contact 161 `is a controlling element 164and associated V upon the extension 158 and the controlling element 163 is pivotally connected upon a lug 166 formed on the casting 12.

The controlling element 164 is'employed to provide for the sounding of an alarm when one attempts to operate the shaft 39 irre- -J spective if the one that attempts the operation is authorized or not. When the shafts 39 adjusted so that the lugs 46 will enter the slots 48 and the, shafts 39 swung inwardly the flange 58 -will engage the controlling member 164 and shift it from its engagement from thecontact 161 andthereby provide for the sounding of the alarm. The electrical arrangement is such that when element 164 clears contact 161 the alarm will be sounded. The controlling element 163 is operated from the lugs 86 whereby when) the plate 81 is revolved, or whenthe plate 81 is bodily revolved with the sleeve 76 the lugs 86 will shift the element 163 for the purpose of closing the eircuit to the contact v160 thereby sounding an Cil alarm to indicate that the lock is being surreptitieusly tampered with. The controlling element 165 is operated from a plunger 167 and engaged by the corrugated edge of the controlling disc 122 and the vertical movement of the plunge1167 will provide for the sounding of an alarm to indicate that the lock is being opened by one authorized to do so. The corrugated or notched edge of the controlling disc 122 is indicated at 168. See Figure 14. The plunger 167 is also shown inFigure 14 and on the reciprocation of the plunger 167 the controlling element 165 will be intermittently'roclred on its pivot whereby the alarm will be intermittently7 sounded. The disc 122 is revolved by the shaft 67, when the lug or protuberance 106 engages in the notched part 112 and the turning of the shaft is had for the purpose of positioning the openings 123 in selective arrangement for the passage of the plunger members 103, 104 to engage the abutment fingers 121 for the purpose of shifting the throweout disc 120 rearwardly to release the bolt structure shifting mechanism After Vthe permutable locking mechanism has been released, the sleeve 76 is adjusted to its desiredextent, and which can be ascer tained 'from the dial 80 the operator is familiar with the setting. The desired extent for the adjusting of the'lug 91 is to have the same enter the opening 95 so that the collar 92 will be coupled with the sleeves 73 and 76 to rotate therewith or rather revolve therewith. After the collar 92 Vhas been coupled'to the shaft 67, the latter lis pulled out and adjusted until the protuberance v106 enters the slot 105. vrlhe shaft 67 is then turned slightly and the plunger device is coupled therewith. he ,plunger members are nevvvin positionfto pass through the controlling disc 122 to engage the abutment fingers 121. Nh n the shaft 67 is pulled outwardly, it is done against the action of its controlling spring 119,y and after the plunger device has been coupled to theA shaft 67, said shaft is released and the action of thespring will carry the plunger device rearwardly, so that the plunger meml ers 103, 104 will extend through the controlling disc 122,

engage the abutment fingers A121 and shiftl the throw-out disc rearwardly, which inturn will carry the locking members clear `of the links 149, 151-7 and under such conditions'the boltshifting means can be actuated for the purpose of releasing the bolt structure from locking engagement with respect to a door.

The controlling disc 122 is set te arrange certain of the openings to oppose the abutment fingers by the setting head 114. A fter the disc 122 has been adjusted it is fixed in its adjusted position. rthe shaft 67 is rotated to turn the disc to an extent to position the selected openings 123 for the passage of the plunger member. rThe operator governs the extent of turn from the dial 72 as he is familiar with the setting position of the disc.

In Figure 6 there is shown conventionally andin dotted lines a pair of oppositely disposed locking bolt structures 167, 168 for en agement respectively in opposite 'sides 169, 170 of the wall of the door opening. Guides 171 are provided for structures 167, 168 and associated with these latter are combined projecting and retracting devices 172, 173 respectively. rlhe device 172 is coupled with link 149 for operation thereby and device 173 is connected with link 151 for actuation thereby. This showing is made by way of example, as any suitable locking bolt structures capable of being actuated by the links 149, 151 may be employed.

`What i claim is 1. A. permutation lock comprising a locking bolt shifting means, a permutable locking mechanism therefor and including a slidable and rotatable pring controlled plunger device andv a slidable, spring controlled locking device, said locking device engaging in said shifting` means to lock it and moved to released position by said plunger device, and a permutable locking means common to said mechanism and shifting means for normally retaining them from movement.

2. A. permutation lock comprising a locking` bolt shifting means including a pair of oppositely movable swinging links for projecting and retracting the bolt in opposite directions, a permutable locking mechanism for said links and including a slidable and rotatable, spring controlled plunger device and a slidable, spring controlled locking device normally engaging in said links to prevent the swinging movement thereof, said locking device being moved to released position with respect to said links hy said plunger device, and a locking means common to said mechanism and shifting means for normally retaining them from movement.

A. permutation lock comprising a locking bolt shifting means, a permu'tahle locking mechanism therefor including a plunger device and a locking device, the latter engaging in said shifting means for locking it and the former for moving the locking device to released position with respect to said shiftingI means, a locking means common to said mechanism and bolt shifting means for normally'retaining them from-movement, anda concealed releasing means for said locking device operated independently of said mechanism and said locking means and supported by said mechanism.'

4. A permutation lock comprising a locking bolt shifting means, a permutable locking mechanism therefor including a plunger and a locking device, the latter normally engaging in said shifting means for locking it and moved to released position by said plunger device, a perniutable dual locking means common to said mechanism and bolt shifting means for normally retaining said mechanism and bolt shifting means from movement, and a. releasing means for said locking device operated independently of said mechanism and dual locking means when normally in inactive positions. n

5. A permutation lock comprising a locking bolt shifting means including'a pair of oppositely movable swinging links operated from a common shaft therefor and providing for projecting Vand retracting oppositely disposed bolts, a permutable locking mechanism for said links, and a locking means common to said mechanism and bolt shifting means for normally retaining them from movement, said links pivotally supported from said locking means.

' 6. A permutation lock comprising a locking bolt shifting means including a pair of oppositely movable swinging links operated from a common shaft for projecting and retracting oppositely disposed bolts, a permutable locking mechanism .for said links, and a dual locking means common to said mechanism and said shifting means for normally retaining them from movement, said links pivotally supported from said dual locking means. Y

7. A permutation lock comprising a locking bolt shifting means including a pair of oppositely movable swinging links operated from a common shaft therefor and providing for projecting and retracting oppositely disposed bolts, a permutable locking mechanism for said links, a locking means common to said mechanism and bolt shifting means for normally retaining them from movement, said links pivotally supported from said locking means, and a concealed releasing means coacting with certain elements of said mechanism for releasing said shifting means independently of the operation of said mechanism. l

8. A permutation lock comprising a locking bolt shifting means including a pair of oppositely movable swinging links operated from a common shaft for projecting and retracting oppositely disposed bolts, a permutable locking mechanism for said links, a dual locking means common to said mecha-` nism and said shifting means for normally retaining them from movement, said links pivotally supported from said dual locking engaging in said shifting means for locking the latter and said Vplunger shifting said" locking device to release said shifting means, and a permutable locking means common to said mechanism and said shifting means for normally retaining them from movement.

10. A permutation lock comprising a locking bolt shifting means, a permutation lock-- ing mechanism therefor and including a rotatable, slidable plunger device and a spring controlled locking device, said locking device engaging in said shifting means for locking the latter and said plunger shifting said locking device to release said shifting means, and a permutable locking means common to said mechanism and said shifting means for normally retaining them from movement,

said locking mechanism further includingv 11. A permutationlock comprising a lockino bolt shifting means a ermutable locking b C 5 D mechanism therefor including a plunger device and alocking device, the latter engaging in said shifting means for locking it and the former for moving the locking device to released position with respect to said shifting means, a locking means common to said mechanism and bolt shifting Ameans for normally retaining them from movement, and a concealed releasing means for said locking device operated independently of said mechanism and said locking means and supported by said mechanism, said mechanism including means to provide for the plungerfdevice engaging with said locking device at selective points.

l2. A permutation-lock comprising a locking bolt shifting means, a permutable locking mechanism therefor and including a shiftable and rotatable spring controlled plunger device and a slidable, spring controlled locking device, said locking device engaging in said shifting means to lock it and moved to released position by said plunger device, and a permutable locking means common to said mechanism and shifting means for normally retainingthem from.movement, said mechanism including adjustable means to providel for the plunger device engaging with said locking device at selected points.

13. A permutation lock comprising a locking bolt shifting means including a pair of oppositely movable swinging linksffor projecting and retracting the bolt in opposite directions, a permutable locking mechanism for said links and including a slidable and rotatable, spring controlled plunger device and a slidable, spring controlled locking device normally engaging in said links to prevent the swinging movement thereof, said locking device being moved to released position With respect to said links by said plunger device, and a locking means common to said mechanism and shifting means for normally retaining them from movement, said mechanism including adjustable means to provide for the plunger device engaging With said locking device at selected points.

In testimony whereof I aiiix my signature hereto.

KARL LITZELBERGER. 

